head to head · open source
LocalAI vs langtest
LocalAI has 50,187 GitHub stars, 4,574 forks, 201 open issues and last shipped yesterday. langtest has 561 stars, 53 forks, 6 open issues and last shipped 2 months ago. LocalAI leads on adoption by 8,846% (50,187 vs 561 stars). LocalAI is written in Go under MIT; langtest is written in Python under Apache-2.0. LocalAI has attracted 9% as many forks as stars, langtest 9%. LocalAI was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (llm), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| LocalAI | langtest | |
|---|---|---|
| GitHub stars | ★ 50K | ★ 561 |
| License | MIT | Apache-2.0 |
| Written in | Go | Python |
| Last push | 2026-11-04 | 2026-08-28 |
| Forks | ⑂ 4.6K | ⑂ 53 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick LocalAI if
- You weight community size — 50K stars and counting
- You want the MIT license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick langtest if
- You want the langtest feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and langtest fits your workflow better
About LocalAI
Deutsch Español français 日本語 한국어 Português Русский 中文 LocalAI is the open source AI engine. Run any model LLMs, vision, voice, image, video on any hardware. No GPU required. A small core, not a bundle. Each backend wraps a best in class engine (llama.cpp, vLLM, whisper.cpp, stable diffusion, MLX...) in its own image, pulled only when a model needs it. You install nothing you don't use. Composable by design : backends are separate and pulled on demand, so you install only what your model needs Open and extensible : load any model, or build your own backend in any language against an open interface Drop in API…
read the full LocalAI overview →
About langtest
LangTest: Deliver Safe & Effective Language Models Project's Website • Key Features • How To Use • Benchmark Datasets • Community Support • Contributing • Mission • License Project's Website Take a look at our official page for user documentation and examples: langtest.org Key Features Generate and execute more than 60 distinct types of tests only with 1 line of code Test all aspects of model quality: robustness, bias, representation, fairness and accuracy. Automatically augment training data based on test results (for select models) Support for popular NLP frameworks for NER, Translation and Text…
read the full langtest overview →
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Frequently asked questions
Is LocalAI or langtest more popular?
LocalAI has 50,187 GitHub stars and langtest has 561. LocalAI has the larger community by that measure.
Are LocalAI and langtest free?
Both are open source. LocalAI is licensed under MIT and langtest under Apache-2.0. Neither carries a licence fee.
What is the difference between LocalAI and langtest?
LocalAI is written in Go and langtest in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, LocalAI or langtest?
Choose LocalAI if you want the larger community (50,187 stars) or its MIT licence terms. Choose langtest if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.